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CVE-2026-0861 is an integer-overflow flaw in GNU C Library (glibc) versions 2.30 through 2.42 affecting memalign, posix_memalign, and aligned_alloc. An excessively large alignment combined with a size close to PTRDIFF_MAX can overflow size_t during aligned allocation processing, resulting in heap corruption.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
31 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the EulerOS SA-2026-3417 security update; the content provides no vulnerability-specific technical details.
A vulnerability addressed by the EulerOS_SA-2026-3504 security advisory for EulerOS UVP 2.11.0 glibc-related packages; no technical flaw details are provided.
A glibc vulnerability patched in IPFire Core Update 200.
Listed in the advisory CVE section without descriptive context in the provided content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.